(19)

(11)

EP 4 158 127 A1

(12)

(43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 21728893.5 (22) Date of filing: 26.05.2021

(51) International Patent Classification (IPC):  E04C 2/04(2006.01) E04F 15/10(2006.01) B28B 1/52(2006.01) (52) Cooperative Patent Classification (CPC): E04F 15/107 (86) International application number: PCT/EP2021/063998 (87) International publication number: WO 2021/239788 (02.12.2021 Gazette 2021/48)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 26.05.2020 NL 2025684 18.11.2020 NL 2026921 (71) Applicant: Champion Link International Corporation 2640 The Valley (AI)	(72) Inventors: VAN POYER, Tom Jiaxing, Zhejiang 314100 (CN) BOON, Sven Jiaxing, Zhejiang 314100 (CN) BAERT, Thomas Luc Martine 9830 Sint-Martens-Latem (BE) (74) Representative: Patentwerk B.V.  P.O. Box 1514 5200 BN 's-Hertogenbosch 5200 BN 's-Hertogenbosch (NL)